package com.sky.Aspect;

import com.sky.annotation.AutoFill;
import com.sky.constant.AutoFillConstant;
import com.sky.context.BaseContext;
import com.sky.enumeration.OperationType;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.Signature;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.stereotype.Component;

import java.lang.reflect.Method;
import java.time.LocalDateTime;

@Aspect
@Component
@Slf4j
public class AutoFillAspect {
    @Pointcut("execution(* com.sky.mapper.*.*(..)) && @annotation(com.sky.annotation.AutoFill)")
    public void autoFillPointCut(){}

    @Before("autoFillPointCut()")
    public void autoFill(JoinPoint jojoinPoint){
        log.info("开始公共字段填充");
        MethodSignature signature = (MethodSignature)jojoinPoint.getSignature();
        AutoFill autoFill  = signature.getMethod().getAnnotation(AutoFill.class);
        OperationType operationType = autoFill.value();

        Object[] args = jojoinPoint.getArgs();
        if (args == null || args.length == 0){
            return;
        }
        Object object = args[0];

        LocalDateTime  now = LocalDateTime.now();
        Long currentId = BaseContext.getCurrentId();

        if (operationType == OperationType.INSERT){
            try {
                Method setCreateTime = object.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_TIME, LocalDateTime.class);
                Method setCreateUser = object.getClass().getDeclaredMethod("setCreateUser", Long.class);
                Method setUpdateTime = object.getClass().getDeclaredMethod("setUpdateTime", LocalDateTime.class);
                Method setUpdateUser = object.getClass().getDeclaredMethod("setUpdateUser", Long.class);
                setCreateTime.invoke(object,now);
                setCreateUser.invoke(object,currentId);
                setUpdateTime.invoke(object,now);
                setUpdateUser.invoke(object,currentId);
            }catch(Exception e){
                e.printStackTrace();
            }
        }else if (operationType == OperationType.UPDATE){
            try {

                Method setUpdateTime = object.getClass().getDeclaredMethod("setUpdateTime", LocalDateTime.class);
                Method setUpdateUser = object.getClass().getDeclaredMethod("setUpdateUser", Long.class);

                setUpdateTime.invoke(object,now);
                setUpdateUser.invoke(object,currentId);
            }catch(Exception e){
                e.printStackTrace();
            }
        }

    }

}
